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Gas / Fuel Caps

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Gas / Fuel Caps at 1A Auto

What is a Gas Cap and where is it Located?

There was once a time when the main reason you would need to buy a replacement gas cap is because you were in such a rush to get to your destination you left it sitting on the fuel pump after refilling your tank. After all, most people viewed fuel caps simply as a cover for your tank to help prevent fuel theft and your supply from possibly getting contaminated with dust, dirt, etc., and not much more than that, so buying a new one could wait. Nowadays, in addition to providing those same functions, the fuel cap is a crucial part of the emissions system of modern cars and trucks. 

Beginning in the 1970s, automakers were required to create vehicles with evaporative emissions control (EVAP) systems. This system is designed to prevent fuel vapors from entering the atmosphere by containing and reintroducing them back into the engine to be burned. This is a sealed system, and a correct fitting and sealing gas cap is needed to prevent any leak of pressure.

Common OBDII fault codes related to EVAP leaks are:

  • - P0440 – Large EVAP leak
  • - P0442 – Small EVAP leak
  • - P0443 – EVAP Purge Solenoid Control Circuit
  • - P0449 – EVAP Vent Solenoid Control Circuit

A properly functioning fuel tank cap not only helps protect you, those around you, and the environment from harmful gas fumes, but it also helps to prevent the wasting of fuel. Your automotives fuel supply may evaporate faster with a defective gas cap, resulting in having to refuel more frequently.

Different types of fuel caps are available, providing drivers today with options. There are locking gas caps and these types are locked into place with a key, adding an extra layer of security and protection for those motorists who desire it. There are also non-locking gas tank caps available, which are twisted and snapped into place.

Need a Gas Cap Replacement?

Often neglected and overlooked, the fuel cap is an important and absolutely necessary component in every vehicle - simply put, it is more than just a cover! If your vehicle has an EVAP system leak due to a loose or ill fitting fuel tank cap, which is a definite safety hazard, or if your cap needs replacing for any other reason, then we’re here to help. At 1A Auto, shopping for a reliable gas cap replacement for your car, truck, SUV or van is easy. You’ll find a large selection of durable, locking and non-locking gas caps for many makes and models, at great prices. Call our customer service toll free at 888-844-3393 if you have any questions about our aftermarket gas caps, warranty, compatibility or to purchase, or you can buy online.

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